My '56 Olds project is ready for sandblasting/primer. The body is stripped and ready to come off the frame, and will need firewall treatment, floor pans, lower door skins and some minor rocker patching. Should I have the car blasted, sanded and epoxy primer/sealed before the metalwork? That's the way I see it done on every car project show on TV, and what I would naturally assume, since I'll want to see exactly what's under the paint, body tar, etc. to know what to fix, but one shop owner has suggested doing the patch panels first, then blasting. What does the HAMB say?